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<title>Options Window: Miscellaneous: Files</title>
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<h1>Options Window: Miscellaneous: Files</h1>
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<p>The IDE categorizes all files by type. The Files tab displays the file types recognized by the IDE, the mime resolver for that type and the location of the file types listed as belonging to that type. 
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<p>You can specify the following elements in this panel:</p>

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<p>File Associations</p>
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<td align="left" headers="r2c1-t27 r1c2-t27">This section enables you to specify file types according to the file extension. 
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<p>&nbsp;&nbsp;&nbsp;&nbsp;File Extension</p>
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<td align="left" headers="r3c1-t27 r1c2-t27">Specifies name of mime resolver for files of this type.</td>
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<p>&nbsp;&nbsp;&nbsp;&nbsp;Associated File Type (MIME)</p>
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<td align="left" headers="r4c1-t27 r1c2-t27">Specifies the related MIME type for the selected file type.</td>
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<p>Files Ignored by the IDE</p>
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<td align="left" headers="r5c1-t27 r1c2-t27">This section enables you to specify the types of files that are ignored based on file name patterns. 
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<p>&nbsp;&nbsp;&nbsp;&nbsp;Ignored Files Pattern</p>
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<td align="left" headers="r6c1-t27 r1c2-t27">Type POSIX-style regular expressions to specify the files you want the IDE to ignore. The IDE includes some default patterns for files that are ignored by default. Click the Default button to restore the default patterns.</td>
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<p>Enable auto-scanning of sources</p>
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<td align="left" headers="r7c1-t27 r1c2-t27">When selected, the IDE will scan the source code of projects to detect any files that were modified externally. Scanning is triggered when the focus is returned to the IDE, for example when the user returns to the IDE from another application.
<p>If your sources are only modified from within the IDE, you can probably disable auto-scanning with little risk of encountering problems. Disabling auto-scanning may improve IDE performance if you are working on large projects.</p>
<p>Auto-scanning is enabled by default.</p>
<p>For more information about source scanning and other performance-related options, see the following FAQ on the NetBeans wiki.</p>
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<hr><p><b>Related Topics</b></p>
<p><i>Developing Applications with NetBeans IDE</i>, 
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